For 22.2mm handlebars. This is a rare bicycle bell that rings with a motor. It has a large build that suits utility bikes and delivery bikes, giving it a strong presence (see the example installation). It's also recommended for electric bikes that use many electrical components. It's slightly larger than the vertically rotating bell also listed. Operation confirmed. Limited stock (2 remaining) *The lid will be removed for packing during shipping. *Long-term storage item Utility bike, delivery bike, vintage bicycle, retro, Showa retro